libiberty/sigsetmask.c

   1 /* Version of sigsetmask.c
   2    Written by Steve Chamberlain (sac@cygnus.com).
   3    Contributed by Cygnus Support.
   4    This file is in the public doamin. */
   5
   6 /* Set the current signal mask to the set provided, and return the
   7    previous value */
   8
   9 #define _POSIX_SOURCE
  10 #include <ansidecl.h>
  11 /* Including <sys/types.h> seems to be needed by ISC. */
  12 #include <sys/types.h>
  13 #include <signal.h>
  14
  15 extern void abort PARAMS ((void)) ATTRIBUTE_NORETURN;
  16
  17 #ifdef SIG_SETMASK
  18 int
  19 DEFUN(sigsetmask,(set),
  20       int set)
  21 {
  22     sigset_t new;
  23     sigset_t old;
  24
  25     sigemptyset (&new);
  26     if (set != 0) {
  27       abort();  /* FIXME, we don't know how to translate old mask to new */
  28     }
  29     sigprocmask(SIG_SETMASK, &new, &old);
  30     return 1;   /* FIXME, we always return 1 as old value.  */
  31 }
  32 #endif